Lawrencium (Lr) — Element Properties, Uses & Facts
Overview
Lawrencium is a synthetic chemical element with chemical symbol Lr (formerly Lw) and atomic number 103. It is named in honor of Ernest Lawrence, inventor of the cyclotron, a device that was used to discover many artificial radioactive elements. A radioactive metal, lawrencium is the eleventh transuranic element and is also the final member of the actinide series.
Electron configuration
The electron configuration of Lawrencium is [Rn] 5f14 7s2 7p1, with electron shells of 2, 8, 18, 32, 32, 8, 3.
Physical and chemical properties
Lawrencium is classified as a actinide. It has an atomic mass of 266 and exists as a solid at standard conditions.
Real-world uses of Lawrencium
Lawrencium is an actinide studied primarily in nuclear science and research due to its radioactive properties.
Interesting facts about Lawrencium
- Lawrencium has the atomic number 103 and chemical symbol Lr.
- It belongs to period 7, group 3 of the periodic table.
- Lawrencium was discovered by Lawrence Berkeley National Laboratory.
Explore Lawrencium interactively
Want to compare Lawrencium with other elements or see it highlighted on the full table? Open the interactive periodic table and click on Lr to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.
What is Lawrencium used for?
Lawrencium is an actinide studied primarily in nuclear science and research due to its radioactive properties.
What is the atomic number of Lawrencium?
The atomic number of Lawrencium is 103, meaning it has 103 protons in its nucleus.
What is the electron configuration of Lawrencium?
The electron configuration of Lawrencium is [Rn] 5f14 7s2 7p1.
Is Lawrencium a metal, nonmetal, or metalloid?
Lawrencium is classified as a actinide.